package com.itheima.service;

import com.itheima.pojo.Member;

import java.util.List;

public interface MemberService {

    //根据手机号查询会员
    Member findByTelephone(String telephone);

    //添加会员信息
    void add(Member member);

    //根据月份统计会员数量
    List<Integer> findMemberCountByMonths(List<String> months);
}
